Since 1984 the P21S product line has expanded significantly. What hasn't changed is the commitment to world class quality. P21S still stands for "factory approved" automotive care of the highest caliber made for people who know quality when they see it. You don't have to own a German made qutomobile to appreciate the P21S product either, just a vehicle you think is worth taking care of. If you do, we think that you will find that spending a bit more on P21S products represents a worthwhile investment.